make: fix documentation of Lst_MoveAll

In CLEANUP mode, was originally meant to track memory allocations but is
useful during debugging as well, initialize the list.  There is no
distinct constant representing an invalid pointer, otherwise that would
have been an even better choice.
This commit is contained in:
rillig 2021-03-15 16:45:30 +00:00
parent c175751478
commit c066baf306

View File

@ -1,4 +1,4 @@
/* $NetBSD: lst.c,v 1.104 2021/02/01 19:39:31 rillig Exp $ */
/* $NetBSD: lst.c,v 1.105 2021/03/15 16:45:30 rillig Exp $ */
/*
* Copyright (c) 1988, 1989, 1990, 1993
@ -34,7 +34,7 @@
#include "make.h"
MAKE_RCSID("$NetBSD: lst.c,v 1.104 2021/02/01 19:39:31 rillig Exp $");
MAKE_RCSID("$NetBSD: lst.c,v 1.105 2021/03/15 16:45:30 rillig Exp $");
static ListNode *
LstNodeNew(ListNode *prev, ListNode *next, void *datum)
@ -205,7 +205,7 @@ Lst_FindDatum(List *list, const void *datum)
/*
* Move all nodes from src to the end of dst.
* The source list becomes empty but is not freed.
* The source list becomes indeterminate.
*/
void
Lst_MoveAll(List *dst, List *src)
@ -219,6 +219,10 @@ Lst_MoveAll(List *dst, List *src)
dst->last = src->last;
}
#ifdef CLEANUP
src->first = NULL;
src->last = NULL;
#endif
}
/* Copy the element data from src to the start of dst. */